Bob's Abbott's Bitters is a small-batch, artisan cocktail bitters that's made by steeping botanicals in Scotch whisky, then filtering and maturing them in an American oak barrel for six months.

Abbott's bitters are a recreation of the classic bitters recipe from the 20th century. Bob's Bitters recreates the recipe using a surviving original bottle, tasting and testing it, and then testing it in a Manhattan cocktail.

Abbott's bitters are aromatic/medicinal bitters that were popular in the 1920s. Abbott and Co. was founded in Baltimore, Maryland in 1865 and began selling bitters in 1872. Abbotts bitters were one of the three biggest-selling bitters during the cocktail era and were used in the original Manhattan cocktail.